| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] to have been [vb pp] [prep] | 515 |
|
| 2 | to have been [vb pp] [prep] [det] | 88 |
|
| 3 | [vb pp] to have [vb pp] [prep] [det] | 14 |
|
| 4 | [vb pp] to have been [prep] [det] | 6 |
|
